New memory causing random lockups/crashes

[ReaverX]

I have an old DFI P2XBL (Rev. DE+) board running Intel 440BX and a P3 600EB. In the book it says run PC66 for 66MHz FSB cpu's or PC100 for 100MHz, doesn't say anything about PC133, and the 600EB is clocked at 133MHz with a 4.5 multiplier. I open up the case and there's a stick of generic 128 MB PC133 so I go out and buy another 128 MB stick of PC133 and put it in. I noticed that the original stick was in DIMM slot 3 so I figure it doesn't matter which slot I stick the new one in since they are both PC133. Turn it on, it runs good for awhile, I play some JK2, and get a hangup. Reboot it, plays for awhile, I get a crash, then I keep rebooting and it's crashing sooner and sooner every time. So I let it sit for an hour, and it takes awhile to crash once I start up again. This is making me think heat problems. But what's overheating? I know I had to move the power/fan box to get the memory in, but I checked and nothing is disconnected. Is it possible the 133MHz RAM is sucking more voltage now, more than the memory controller chip (is there such a thing) is rated for? And I did open the case back up and tried re-arranging the two sticks to DIMM Slots 1 and 2, that didn't help. I tried turning ECC on and off, that didn't help either. If anyone has any suggestions it would be greatly appreciated.

Thanks

The spec sheet for the board is here: http://sj.dfi.com.tw/product/fetch.asp?theValue=P2XBL R. D.
The new ram is Kingston ValueRAM 128MB PC133 DIMM CL3

 

[Nothinman]

Run memtest86 with just the new stick installed.

 

[wnied]

What Video Card are you running. Might be an issue with the videocard overheating also. Since theyre the real scorchers with a game like JK2. Might wanna consider an extra fan or two, and a better HS&F for your cards GPU.

Hope this helps ya!
~wnied~

 

[tbalon]

You might want to check your bios settings foryour ram. Make sure they are not set too agressivly.

 

[ReaverX]

I'm running a Matrox G400 with 32 mb memory. I tried a few things though, I left both sticks in and took one side of the case off and layed the whole thing down on it's side thinking maybe that would help with air circulation, and it did, I was crashing way less, but I still got the odd crash. So I went in and underclocked the FSB from 133 mhz to 124 mhz I think it was. And I haven't crashed since. So if I could make an amateur analysis it would be this: Before I put the second stick of ram in, the processor, which was clocked at 133 mhz, wasn't reaching it's full potential. So the fact that the mobo only wants up to a 100 mhz FSB didn't matter. But when I stuck the second stick of ram in, I started crashing, because there was enough data to feed to the CPU to reach it's 133 mhz mark and thus start creating alot of heat. Does this make sense? I tweaked the clock speed down a tad and now everything's running smooth. On the other hand, I AM running an underclocked CPU and I think there's nothing I can do about it unless I get a new mobo, which is a waste since I'm building a whole new system in a month.

Thanks for the help.